Device for producing drilled holes with undercut

Details Device for producing drilled holes with undercut Device for producing drilled holes with undercut

1994-06-07

1995-10-17

Rachuba, Maurina T.

Abrading

Machine

Rotary tool

451135, B24B 3300

Patent

active

054585309

ABSTRACT:
A device for producing drilled holes with an undercut has a swivel bearing, a drill shank mounted in the swivel bearing, swivelling means displacing the drill shank in a gyratory movement about a center line of drilling, a displacement element projecting at one side from the swivel bearing and displacing the drill shank against a resilient restoring force, and a ring around which the displacement element moves.

REFERENCES:
patent: 2802320 (1957-08-01), Nagle
patent: 3022608 (1962-02-01), Tree
patent: 3443399 (1969-05-01), Pope et al.
patent: 3510995 (1970-05-01), Michel
patent: 3641710 (1972-02-01), Heinelt
patent: 4143489 (1979-03-01), Sogner
patent: 4646476 (1987-03-01), Yui
patent: 4798024 (1989-01-01), Grimm

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